Drain-valve.



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' L. N. VINCENT.

DRAINVALVE.

APPLICATION FILED OCT. 3. IBIG.

1 52272098. Patented May 22, 1917.

2 SHEETS-SHEET l.

L. N. VINCENT.

DRAlN VALVE.

APPLICATION FILED OCT. 3. 1916.

1,227,098. Patented May 22, 1917.

2 SHEETS-SHEET 2.

nwwtoz i Louis/V. %C'E/Vr.

NITED STATES PATENT OFFICE.

LOUIS N. VINCENT, OF P RESCOTT, ARIZONA.

IDRAIN-VALVE 7 (/l whom, it may can er-n Be it. known that I, Louis N. VINCENT, 'esiding at Prescott, in the county of Ya'vapai and State ot Arizona, a citizen of the l`niied States, have invented ce'tain new and set'ul I']jrovements in lrtin-Valves; and 'l do hereby declare the following to be a t'll, clear, and exact description the inventien such as will enable others'sklled in the :-t to which it pertains to make and 'use the sane.

My invention relates to iuprovements in automatic -drain valves. v

Ithas l'o' its object: to provide an automatically operated drain valve for use in conn'eetioi with the st eam eylinders of locomoti ves and other engines steam pipes and the lilt'e which remains normally open when the stean prcssure thereon is released, to allow the water ot' eondensation' to be drained therethrengh, and closes by stean pressure int'oduced tl'rongh the steam inlet.

lt. further has for its object'. to provide a drain valve which is automatically closed by steam pressure and automatically opened when the steam pressure is released.

It furtherhas for its object to provide a drain valve having a miin'un number oi' parts and to uount the working elements thereot in one part so that when said partis removed the working elements will also be removed. i

It further has for its object to provide means whereby an and all foreign 'matter which may collect in the (lrain valve'and clog it up and hinder its operation may. be

quickly elininated without disnembering the. several parts of the same.

It :further has for its objectw to provide a v drain valve which is simple, inexpensive and dnrable in construetion and easy and effective in operation The invention consists in the several' tea tures and in the Construction. comhinathm and arrangement of such features as more fllv hereinafter described and'clainied;

` Rektori-ing to the drawings ii Fignre 1 is an elevation ol"the (train valve. t f Fig. 2 is a central Vertical section of the drain Valve showing: 'the position the several parts assnn'e when under steam pres` sure and both drain ports closed in full lines, .nd showing the position the several parts assume when released froni' steam pressure and both drtin ports open in dotted lines.

.Speeifietion of Ltter latent. 3 i Patentd lay 22, 1917, Applicatiiin fileii octbr-e,

1915; seria1no.-123,517.

i Figd is a top plan View.

Fig. :l is a cross-section on the line ot Fi Fig. a is a side elevztion of the Valve and valve stem. .i

Fig. ti isa top plan view of the valve.

Fig. 'T is a bottom plan View of the valvef lfn the. drawngs' in which similar ref-- erence characters' denote similar partsthroughout. the seve"al views 1 repr'ese'nts the drain' valve having .an outef member or casing and an inner member 'or plug 3. The enter nenber or casing 2 is provided at the top with a hollow serewthreadd extension t adapted to be connected with a high pressure inlet pipe 5 communicating with the steam chest of a steam cylinder,

when the valve is enployed in' connection `with a steaneylinder, and just below'the screwthreaded extension a hexagonai portion t' is provided adapted for the a plication oi' 'a wreneh or other tool.

'the interier of the enter member or cas-` ing provided with a shallow annular chanber 7 just below and co'nmunieating 'v'ith the hollow serewthreaded extension 4:

which in turn eonnnmieates with the high p-essre'inletpipe 5, and below the chamb'e' 7 a largerchanber 8 is"providd; i

lligl pressure lay-pass ports 9, preferably taciug each other, connect the chamber 7 with the chamber 8 and each by-pass port eomprises a late 'al horizontal channel 1.0

and a vertical comnunicating channel '11 having a downn 'ardly and nwardly curved lower end 12 for the purpose of asssting in the. passage' of the water of condensation I there'trmn. and 13 are sere'wthreadswhich are 'torned on the interier of the outer member or casing and extend from the chamber R to the lower edge of the o'ter member or casiug. V

The inner meniher orphig 3 is provided on its exterior with an upper screwthreaded portion 14 ada-pted to be Secured v in the ote' nenber or easing 2 and to engage the screwthreads 13 thereof u"flang'e 15 to *but against the lower end of the enter member ork-asine' i& a hexagonal portion 16 adapted tor `the application of a wrench or other suitable toolwhen it is desired to grasp the sane to 'insert it or remove itfrom the enter nenbe or easine, and a hoilow screwthreaded portion 17 adaptedct'or connection with an exhanst pipe notshown.

i 'l`he interier et the plug provided with hambe- 1& which connuunicutes with the hollow portion 17. and-the chamber being larger in eirruml'ereuee than the opening in the hollow port on 17 a shoulder 19 s forel at the po l where they meet and the inner upper edge of the chamber is beveled as al 20 to 'taeilitate the, flow of water or rondensed steam into the same.

i\ \al\'0 21 is operatively contained within the outer meniher or casing 9 and bodily mounted in the inner member or plug 3 and conprises a circular disk 22, which is a little iu width than the length of the by-pass high pressure ports 9, seated and adapted to reeiprocate inthe ehanber h? and having an upwardly extending projeetion 23 seated in the chamber 7 and provided with a cross slot 24, a stem 25 de- 'peudi'g 'from the lower face of the' disk nount d in the hollow portion 17, and, provided with a plurality of longitudinal exlaust ehannels or grooves 26 extending l'rou' end to end tlereol' and having sharp eutting edges 27.

The purpose ot the sharp eutting edges is to remove any foreign mat-ter which may mremnulate iu the plug and retard its operation l' v applyiug a serewdriver to the slot Q-l in the projeetion 23 and then .turning the valve and stern, and in order to aecomplish this it is only necessary to remove the high pressure pipe to get access to the slot 24 and it. does not require the lisnenherment or taking apart of the sevrral parts of the drain valve.

I\ spiral spring 28 is mounted on the teni 25 between the disk 22 and the shoulder if) and serves to normally retain the disi( against the top of the ehanber 7 and thus hold the valve in its open position until steani pres-sure from the high pressure inh-t l'orees the disk downward and eloses the valve and ports.

lv reason of the several by-pass ports being formed directly in the members, by hoi-ing, pipes are entirely dispensed with, and by reason ot' the plug member bodily rarrying the valve, valve stem and spring they cau be removed and also inserted with out being taken out of the plug memberor being displaced.

In operation steam under pressure passes through the high pressure inlet pipo and lollow extension 4 into the' ehamber 7 and l'orees the valve 21 down upon its lower seat, 'l'orned by the upper edge of the plug member 3, eompresses the spiral spring 28 and eloses the by-pass high pressure ports E) and when the valve is released from the steam pressure the spring 28 expands and *toi-ces the valve against its upper seat in the top of the chamber 8, whereupon all the condensed steam or water passes through the chamber 7, by-pass high pressure ports 9 and also the ehamber 18 and thence through the longitudinal ehannels in the stem of the valve and the hollow portion 17 of the inner member or plug to the exhaust pipe.

I do not wish to be nnderstood as limit- -ing myself to the specific details of constrnction and arrangement as herein described and illustrated, as it is manfest that .variations and modfications may be made in the features of Construction and arrangementin the adaptation of the devee to the various conditions of use without departing from the spirit and scope providing a valve seat, a valve member having an importet-ate disk head eoperating with said seat, and 'a solid gniding stem in said outlet, and means 'for retaining said valve in a normally open position.

2. In a drain valve, an outer member, an inner member, a 'valve mouuted in the inner member and provided with a pluralit v of substantially straight grooves and straight eutting edges between said grooves, said valve adpted to be, positively rotated to remove any foreign matter which may aceumulate in the inner member.

3. A drain valve comprising a member provided with a ehamher and an inlet thei-eto, by-pass ports of substantially uniform cross-section in said ehamber, a second member provided with an ontlet and having a free upper end terminating at substantially the lower end of the by-pass ports and providing a valve seat substantially in'aliuement with the end of said ports, a valve member having an imperforate disk head eoperating with said seat, and an elongated solid guiding stern in said outlet provided with longitudinally extendiug external grooves and means for retaining said valve in a normally open position contzined within said `inner member.

In testmonywvhereof I have afiixed my signature.

` LOUIS N. VINCENT. 

